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516
RESULTS

Media Type
503
texts
9
movies
3
audio
1
software
Topics & Subjects
180
NASA Technical Reports Server (NTRS)
167
REFRACTION
98
Refraction, Ocular
86
ATMOSPHERIC REFRACTION
82
DTIC Archive
52
Refraction
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Collection
180
NASA Network Resource and Training Site
96
The Medical Heritage Library
84
European Libraries
82
Defense Technical Information Archive
80
UK Medical Heritage Library
79
American Libraries
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Creator
180
nasa technical reports server (ntrs)
82
defense technical information center
8
thorington, james, 1858-1944
7
morton, a. stanford
6
hartridge, gustavus, 1849-1923
5
clarke, ernest, 1857-1932
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Language
447
English
33
German
10
French
3
Latin
2
Italian
1
Brazilian portuguese
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